[INFO] cloning repository https://github.com/amirbou/testio
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/amirbou/testio" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famirbou%2Ftestio", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famirbou%2Ftestio'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 382e40227633f5b24307ac009f46869bdde859c8
[INFO] checking amirbou/testio against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famirbou%2Ftestio" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/amirbou/testio on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/amirbou/testio
[INFO] finished tweaking git repo https://github.com/amirbou/testio
[INFO] tweaked toml for git repo https://github.com/amirbou/testio written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/amirbou/testio already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cab6d710f7df6891cee30aa350ace613a42e123ef1dc273e07ae906b6e151e14
[INFO] running `Command { std: "docker" "start" "-a" "cab6d710f7df6891cee30aa350ace613a42e123ef1dc273e07ae906b6e151e14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cab6d710f7df6891cee30aa350ace613a42e123ef1dc273e07ae906b6e151e14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cab6d710f7df6891cee30aa350ace613a42e123ef1dc273e07ae906b6e151e14", kill_on_drop: false }`
[INFO] [stdout] cab6d710f7df6891cee30aa350ace613a42e123ef1dc273e07ae906b6e151e14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56cfe2c841c29bd154d128ad980472f6ad3768cc986785c984f4bdc6f736dc10
[INFO] running `Command { std: "docker" "start" "-a" "56cfe2c841c29bd154d128ad980472f6ad3768cc986785c984f4bdc6f736dc10", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling fuser v0.10.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking users v0.11.0
[INFO] [stderr]     Checking page_size v0.4.2
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling dlopen_derive v0.1.4
[INFO] [stderr]     Checking dlopen v0.1.8
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling zerocopy-derive v0.3.1
[INFO] [stderr]    Compiling clap_derive v3.1.7
[INFO] [stderr]     Checking zerocopy v0.5.0
[INFO] [stderr]     Checking clap v3.1.5
[INFO] [stderr]     Checking testio v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `fuser` is imported redundantly
[INFO] [stdout]  --> src/testfs.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use fuser::{self, Request, ReplyAttr, FileAttr, ReplyOpen, FileType};
[INFO] [stdout]   |             ^^^^ the item `fuser` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `fuser` is imported redundantly
[INFO] [stdout]  --> src/testfs.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use fuser::{self, Request, ReplyAttr, FileAttr, ReplyOpen, FileType};
[INFO] [stdout]   |             ^^^^ the item `fuser` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]  --> src/testfs.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use libc;
[INFO] [stdout]   |     ^^^^ the item `libc` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]  --> src/testfs.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use libc;
[INFO] [stdout]   |     ^^^^ the item `libc` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Option` is imported redundantly
[INFO] [stdout]  --> src/testfs.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::option::Option;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Option` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Option` is imported redundantly
[INFO] [stdout]  --> src/testfs.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::option::Option;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Option` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.26s
[INFO] running `Command { std: "docker" "inspect" "56cfe2c841c29bd154d128ad980472f6ad3768cc986785c984f4bdc6f736dc10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56cfe2c841c29bd154d128ad980472f6ad3768cc986785c984f4bdc6f736dc10", kill_on_drop: false }`
[INFO] [stdout] 56cfe2c841c29bd154d128ad980472f6ad3768cc986785c984f4bdc6f736dc10